The multicolor photometric observations of the neglected eclipsing binary FT Ursae Majoris （FT UMa） were obtained in 2010. The 2003 version of the Wilson- Devinney code was used to analyze the light curves in the B,...The multicolor photometric observations of the neglected eclipsing binary FT Ursae Majoris （FT UMa） were obtained in 2010. The 2003 version of the Wilson- Devinney code was used to analyze the light curves in the B, V and R bands simultaneously. Based on the spectroscopic mass ratio q = 0.984 published by Pribulla et al., it is found that FT UMa is an evolved contact binary with a contact degree of 15.3%. The low amplitude of light variations, N 0.15 mag, arises mainly from a moderately low inclination angle of i = 62.80° and almost identical components in size rather than the light dilution of a third component, which contributes light of only - 10%.展开更多
Endoscopic submucosal dissection(ESD)has emerged as a safe and sufficient method of treatment of superficial lesions in the gastrointestinal(GI)tract.Advances in endoscopic closure techniques have developed alongside ...Endoscopic submucosal dissection(ESD)has emerged as a safe and sufficient method of treatment of superficial lesions in the gastrointestinal(GI)tract.Advances in endoscopic closure techniques have developed alongside improvements in resection methods.Recent innovations,such as endoscopic hand suturing and new through-the-scope clips and systems,are transforming the field.Along with new devices,the combined methods of closure are developed.Embracing these new techniques can lead to enhanced recovery and reduced complications,marking an important milestone in medical practice.In fact,the European Society of GI Endoscopy recommends against routine closure of the ESD defect,except in duodenal ESD;however,endoscopic closure is strongly advised for immediate perforations.Furthermore,the American Gastroenterology Association provides a detailed expert review on managing perforations in the upper and lower GI tract based on endoscopic closure techniques.On the other hand,the most common postprocedural complications following ESD are delayed bleeding,delayed perforation,and stricture formation.According to recent literature,properly managing the post-ESD defect may reduce the risk of these complications.This review aims to explore novel approaches for managing post-ESD defects and intraprocedural complications to enhance safety and improve long-term outcomes.展开更多
To the Editor:Acute cholangitis,also known as ascending cholangitis,is a po-tentially life-threatening condition resulting from the infection and obstruction of the biliary tract[1].Choledocholithiasis,which in-volves...To the Editor:Acute cholangitis,also known as ascending cholangitis,is a po-tentially life-threatening condition resulting from the infection and obstruction of the biliary tract[1].Choledocholithiasis,which in-volves stones in the common bile duct,is the most frequent cause of such infections,leading to partial or complete blockage of the biliary system[2].During acute episodes,patients may present with abdominal pain,high fever,and jaundice,known as Charcot’s triad,and in severe cases,patients may also exhibit signs of shock and depression[3].An episode of cholangitis can be fatal,and if the underlying obstruction is not addressed,the condition may recur,potentially leading to hepatic abscesses or biliary cirrhosis.Other etiologies of cholangitis include benign biliary strictures,bil-iary malignancies,congenital factors,postoperative complications,inflammatory conditions,and rare causes such as pancreatitis,par-asitic invasion of the biliary tract,external compression,thrombo-sis,and iatrogenic factors.Acute cholecystitis due to the migration of Hem-o-lok clips postoperation is rare.Herein we reported a case of acute cholangitis caused by the migration of surgical Hem-o-lok clips into the bile duct six years after laparoscopic left hemihepa-tectomy.展开更多
基金supported by the Natural Science Foundation of Shanxi Normal University (No. ZR09002)
文摘The multicolor photometric observations of the neglected eclipsing binary FT Ursae Majoris （FT UMa） were obtained in 2010. The 2003 version of the Wilson- Devinney code was used to analyze the light curves in the B, V and R bands simultaneously. Based on the spectroscopic mass ratio q = 0.984 published by Pribulla et al., it is found that FT UMa is an evolved contact binary with a contact degree of 15.3%. The low amplitude of light variations, N 0.15 mag, arises mainly from a moderately low inclination angle of i = 62.80° and almost identical components in size rather than the light dilution of a third component, which contributes light of only - 10%.
文摘Endoscopic submucosal dissection(ESD)has emerged as a safe and sufficient method of treatment of superficial lesions in the gastrointestinal(GI)tract.Advances in endoscopic closure techniques have developed alongside improvements in resection methods.Recent innovations,such as endoscopic hand suturing and new through-the-scope clips and systems,are transforming the field.Along with new devices,the combined methods of closure are developed.Embracing these new techniques can lead to enhanced recovery and reduced complications,marking an important milestone in medical practice.In fact,the European Society of GI Endoscopy recommends against routine closure of the ESD defect,except in duodenal ESD;however,endoscopic closure is strongly advised for immediate perforations.Furthermore,the American Gastroenterology Association provides a detailed expert review on managing perforations in the upper and lower GI tract based on endoscopic closure techniques.On the other hand,the most common postprocedural complications following ESD are delayed bleeding,delayed perforation,and stricture formation.According to recent literature,properly managing the post-ESD defect may reduce the risk of these complications.This review aims to explore novel approaches for managing post-ESD defects and intraprocedural complications to enhance safety and improve long-term outcomes.
文摘To the Editor:Acute cholangitis,also known as ascending cholangitis,is a po-tentially life-threatening condition resulting from the infection and obstruction of the biliary tract[1].Choledocholithiasis,which in-volves stones in the common bile duct,is the most frequent cause of such infections,leading to partial or complete blockage of the biliary system[2].During acute episodes,patients may present with abdominal pain,high fever,and jaundice,known as Charcot’s triad,and in severe cases,patients may also exhibit signs of shock and depression[3].An episode of cholangitis can be fatal,and if the underlying obstruction is not addressed,the condition may recur,potentially leading to hepatic abscesses or biliary cirrhosis.Other etiologies of cholangitis include benign biliary strictures,bil-iary malignancies,congenital factors,postoperative complications,inflammatory conditions,and rare causes such as pancreatitis,par-asitic invasion of the biliary tract,external compression,thrombo-sis,and iatrogenic factors.Acute cholecystitis due to the migration of Hem-o-lok clips postoperation is rare.Herein we reported a case of acute cholangitis caused by the migration of surgical Hem-o-lok clips into the bile duct six years after laparoscopic left hemihepa-tectomy.
